ASUS PRIME B860M-A WIFI-CSM Intel motherboard
- Support Intel® Core…
- LGA 1851
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ATX board for Intel Core Ultra Series 2 with 12+2+1 80A power stages, DDR5 up to 8666 MT/s, PCIe 5.0 x16, three M.2 slots, Wi-Fi 7 and 2.5Gb LAN
Model TUF GAMING B860-PLUS WIFI
This ATX motherboard uses the Intel B860 chipset and an LGA 1851 socket to support Intel Core Ultra Processors (Series 2). It is aimed at builders who want a DIY-friendly platform with integrated Wi-Fi 7 and 2.5 Gb Ethernet for modern gaming or AI workloads.
The primary PCIe 5.0 x16 slot connects directly to the CPU for graphics. One M.2 slot runs at PCIe 5.0 x4, while two additional M.2 slots run at PCIe 4.0 x4 from the chipset. The chipset-linked PCIe 4.0 x16 slot shares bandwidth with the PCIe 4.0 x1 slot, so populating the x1 slot reduces the x16 slot to x2 mode.
A pre-mounted I/O shield, PCIe Slot Q-Release, M.2 Q-Latch and Q-Antenna reduce the tools needed during assembly. BIOS FlashBack allows firmware updates without a CPU installed. Builders should verify DDR5 module heights against the large VRM heatsinks and confirm that the 8+8 pin ProCool connectors match their power supply cables.
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| Product | |
|---|---|
| Brand name | ASUS |
| Model name | TUF GAMING B860-PLUS WIFI |
| Part number | 90MB1JL0-M0AAY0 |
| Processor | |
| Processor | Intel Core Ultra Processors (Series 2) |
| CPU socket | LGA 1851 |
| Chipset | Intel B860 |
| Memory | |
| Memory slot count | 4 × 288pin (DDR5) |
| Supported memory | Up to 8666+MT/s (OC) |
| Max supported RAM | 192 GB |
| Memory channels | Dual Channel |
| Memory profiles | Intel XMP 3.0 |
| Storage | |
| SATA ports | 4 x SATA 6Gb/s |
| M.2 slots | Intel Core Ultra Processors(Series 2)* M.2_1 slot (Key M), type 2280 (supports PCIe 5.0 x4 mode) Intel B860 Chipset M.2_2 slot (Key M), type 2280/22110 (supports PCIe 4.0 x4 mode) M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode) |
| SATA and RAID support | * Intel Rapid Storage Technology supports, SATA RAID 0/1/5/10. |
| Audio & video | |
| Sound channels | Realtek 7.1 Surround Sound High Definition Audio CODEC* - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking - Supports up to 24-Bit/192 kHz playback Audio Features - Audio Shielding - Rear optical S/PDIF out port - Premium audio capacitors - Dedicated audio PCB layers - Audio cover * Due to limitations in HDA bandwidth, 32-Bit/192 kHz is not supported for 7.1 Surround Sound audio. |
| Connectivity | |
| Maximum network speed | 2.5 Gbit/s |
| Wi-Fi standard | Wi-Fi 802.11 be |
| Bluetooth support | 5.4 |
| Ports & slots | |
| PCIe 5.0 x16 slots | Intel Core Ultra Processors (Series 2) 1 x PCIe 5.0 x16 slot |
| PCIe 4.0 x16 slots | Intel B860 Chipset 1 x PCIe 4.0 x16 slot (supports x4 mode)* |
| PCIe x1 slots | 1 x PCIe 4.0 x1 slot* * PCIEX16(G4) shares bandwidth with PCIEX1(G4). When PCIEX1(G4) runs at PCIe x1 mode, PCIEX16(G4) will only run at PCIe x2 mode. |
| Onboard USB headers | 1 x USB 10 Gbit/s connector (supports USB Type-C) 1 x USB 5 Gbit/s header supports 2 additional USB 5 Gbit/s ports 1 x USB 2.0 header supports 2 additional USB 2.0 ports |
| Power | |
| Power connectors | 1 × 24-pin Main Power connector 2 × 8-pin +12 V CPU Power connectors |
| Size & build | |
| Form factor | ATX |
| Width and length | 12.0 in × 9.6 in |
| Shipping weight | 1.91 kg |
| Package size | 356 × 279 × 76 mm |
| Compatibility | |
| Windows 11 support | (22H2 & later) |
| More details | |
| BIOS | 256 Mb Flash ROM, UEFI AMI BIOS |
Other versions of this model
The board follows the ATX form factor and needs both an 8-pin and an additional 8-pin ProCool connector for the 12+2+1 80A DrMOS power stages.
Four 288-pin slots accept non-ECC unbuffered DDR5 up to 8666 MT/s overclocked, with a maximum of 192 GB in dual-channel mode.
Three M.2 slots are provided — one PCIe 5.0 x4 and two PCIe 4.0 x4 — each equipped with a dedicated M.2 heatsink.
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